﻿// <copyright file="ValueConverters.cs" company="Snowman Consulting">
//     Copyright (c) 2009 Snowman Consulting. All rights reserved.
// </copyright>

namespace SnowmanConsulting.ProductKeyManager.UI
{
    using System;
    using System.Globalization;
    using System.Windows.Data;

    /// <summary>
    /// Decimal to Percent Value Converter
    /// </summary>
    public class DecimalToPercentConverter : IValueConverter
    {
        #region IValueConverter Members

        /// <summary>
        /// Converts a decimal to a percentage where 1 is 100%.
        /// </summary>
        /// <param name="value">The value produced by the binding source.</param>
        /// <param name="targetType">The type of the binding target property.</param>
        /// <param name="parameter">The converter parameter to use.</param>
        /// <param name="culture">The culture to use in the converter.</param>
        /// <returns>
        /// A converted value. If the method returns null, the valid null value is used.
        /// </returns>
        public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
        {
            decimal input = (decimal)value;
            input = decimal.Round(input, 2);
            return decimal.Round((input * 100), 0).ToString(CultureInfo.CurrentCulture) + "%";
        }

        /// <summary>
        /// Not used, required for IValueConverter interface
        /// </summary>
        /// <param name="value">The value that is produced by the binding target.</param>
        /// <param name="targetType">The type to convert to.</param>
        /// <param name="parameter">The converter parameter to use.</param>
        /// <param name="culture">The culture to use in the converter.</param>
        /// <returns>
        /// A converted value. If the method returns null, the valid null value is used.
        /// </returns>
        public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
        {
            return null;
        }

        #endregion
    }
}
